[$] Progress on defeating lifetime-end pointer zapping

Paul McKenney gave a remote presentation atKangrejos2025 following up on thetalk he gave last year about thelifetime-end-pointer-zapping problem: certain common patterns for multithreaded code aretechnically undefined behavior, and changes to the C and C++ specificationswill be needed to correct that. Those changes could also impact code that usesunsafe Rust, such as the kernel's Rust bindings. Progress on the problem has been slow,but McKenney believes that a solution is near at hand.